2.0 DIRECTION FOR USE
3.3.1 Special assembly instructions
3.3.4 Clutch
3.3.5 Starter
3.3.6 Muffler
3.3.7 Silencer
Requirements
Warranty Certificate
1.0 INTRODUCTION
Thank you for purchasing a SKY110s engine, developed and manufactured by
SKY ENGINES.
WE ADVISE YOU TO CAREFULLY READ THIS MANUAL AND FOLLOW ALL THE
MAINTENANCE INSTRUCTIONS GIVEN BELOW BEFORE USING THE ENGINE
IN ORDER TO AVOID SEVERELY DAMAGING IT.
If you require more information, have queries or need to purchase spare parts,
please contact us byphone or e-mail using the contact details printed on the cover.
We thank you for the attention, wish you the best of fun and hope you are satisfied with
yourpurchase.Best regards,
Sky Engines s.r.l.
1.1 GENERAL WARNINGS • SKY ENGINES shall not be directly or indirectly liable for the use of the engine, especially if it is
altered or tampered with by third parties.
• MAINTENANCE IS ESSENTIAL to avoid severely damaging the engine. Therefore, we
advise you to CAREFULLY read Chapter 4.0 of this manual and thoroughly follow all the
instructions. For information on damaged spare parts, see paragraph 3.3, which illustrates the
assembly procedures for all the secondary components that tend to deteriorate in time.
• SKY ENGINES shall not be liable for damages caused by an inaccurate maintenance or
incorrect assembly, except for the replacement of components covered by the warranty.
• The engine has a maximum capacity of 90-120 Kg, which means that it is able to transport a
person with a maximum body weight within these parameters. The use of the engine to transport
heavier weights may cause problems to the trimming.
• It is advisable to perform all the inspections required in order to verify that the engine is safe and
in good working order before flying.
• Technical alterations made by the user, though permitted, are full responsibility of the user.
Spare parts used for said alterations shall not be covered by warranty.
• Alterations carried out by the user or the removal of original spare parts may jeopardize the
safety of the engine..
• SKY ENGINES reserves the right to change models and/or catalogues without warning
and without any whatsoever obligation. Further information is provided on Web site
www.skyengines.com
• Aircraft driven by this engine must be used in open spaces only and in areas
reserved for these activities. The user must be aware of all the hazards connected with
the use of this engine and be aware of the fact that it may accidentally switch off.
• For detailed information on the warranty terms, see Chapter 6.0 in this manual
1.2 RECOMMENDATIONS FOR THE PREVENTION OF ACCIDENTS As the use of this engine can be very dangerous, it is important to adopt all the necessary
precautions both during, before and after the flight in order to avoid severe accidents.
We advise you to follow the general precautions illustrated below in order to avoid damages or
accidents.
• As the engine does not solve all flying problems, it is important to avoid risky moves. One of the
most common mistakes is flying above areas that do not allow you to land at very low heights. It is
always important not to underestimate the possibility of faults and the need of having to make an
emergency landing.
• Always take into account that the lack of thrust of the engine may affect the flight stability.
- Pay particular attention to swinging movements caused by the change of trimming that cause
falls of 4-5 meters.
- As the engine could switch off at any time, it is important to make sure you are able to perform an
emergency landing if required.
• ALWAYS avoid flying above water for your own safety and in order not to damage the engine.
2.0 DIRECTIONS FOR USE
The directions for use provided in this manual refer to models available at the time of print. Although the manufacturer is not obliged to provide updates on changes, users may request specific information on the upgrade of single products. For more information, visit Web site www.skyengines.com.
WARNING!! This is not a certified engine! It is intended to be used for experimental and not certified engines.
INTERVAL OF TIME OIL PERCENTAGE BREAK-IN 3 – 3,5 % SUBSEQUENT 2,5% PERIOD
2.1 FUEL
SKY110s is a 2 stage engine that employs a mixture of fuel and oil.
Always remember that a correct carburetion and fuel mixing are essential to prevent the seizure of pistons fitted on 2 stage engines, which are not covered by warranty.
ATTENTION!! MIX FUEL AND OIL WITH A 3% RATIO USING PREMIUM QUALITY SYNTHETIC OIL FOR 2 STAGE ENGINES.
Always check the amount and presence of oil as THE LACK OR EXCESSIVE AMOUNTS COULD DAMAGE THE ENGINE.
WARNINGS!!! FUEL IS EXTREMELY FLAMMABLE AND EXPLOSIVE. ALWAYS PERFORM REFUELING OPERATIONS OUTDOORS, IN AN ADEQUATELY VENTILATED AREA AND WHEN THE ENGINE IS NOT RUNNING. DO NOT SMOKE CLOSE TO FUEL AND DO NOT STORE IT IN AREAS WHERE IT COULD BE EXPOSED TO SPARKS OR FREE FLAMES. KEEP THE FUEL OUT OF THE REACH OF CHILDREN.
ATTENTION!! NEVER MIX DIFFERENT TYPES OF OILS. ° Only use100% BARDAHL KTS synthetic oil.
A good breaking-in ensures a long life of the engine and enhances the performance of its components. Use the engine very carefully during the first 3 hours of flight.
Do not use the engine at maximum power for extended intervals of time.
Do not keep the accelerator in the same position for several seconds; in this case it is
preferable to open and close the accelerator without increasing the elevation in order
not to force the engine
Use the engine for 10 minutes at a time, then allow it to cool.
Repeat the same operations every time you check the engine.
THE BREAK-IN PERIOD CAN BE CONSIDERED COMPLETED AFTER 3 HOURS OF FLIGHT
OR THE USE OF 10 LITERS OF FUEL!
2.3 STARTING THE ENGINE
SKY110S engine is started by a manual starter. It must strongly pull the rope and avoid to
flooding the engine.
2.2 RUNNING - IN
WARNINGS! • The exhaust gases of the engine contain carbon monoxide, which can cause death. DO NOT START THE ENGINE INDOORS. ALWAYS VERIFY THAT THIS OPERATION IS PERFORMED OUTDOORS IN ADEQUATELY VENTILATED AREAS. • Always start the engine after it has been completely assembled as the lack of some components could cause severe damage. • Always handle the propeller with utmost care at it may reach very high speeds to the point of becoming hardly visible. Always maintain a safety distance.
If the engine is cold, always wait a few minutes after start-up to heat the engine and accelerate at regular intervals to avoid damaging it.
3.1 FIGURE OF THE ENGINE
1: CYLINDER SK006 11: MUFFLER SK033
2: RADIATOR CAP SK013 12: IGNITION COIL SK040
3: RADIATOR SK010 13: RADIATOR’S HOSES SK011/012
4: LAMINAR BUNDLE SK021/24/26 14: DRAIN RESERVOIR SK014
5: MUFFLER SEAL SK043 15: RADIATOR RODS SK017
6: HEAD + COVER SK007/08 16: GUARD SK001
7: WALBRO CARBURETOR SK019 17: SPIDER SK032
8: MUFFLER MAINFOLD SK045 18: MANUAL STARTER SK036
9: REDUCTION GEAR SK031 19: SILENT BLOCK SK015/016
10: SILENCER SK041
3.2 TECHNICAL SPECIFICATION
SWEPT VOLUME: 110 CC
MAX. RATED SPEED:
THRUST:
68/70 Kg WITH TWO PROPELLERS IN WOOD 125 cm @11200 RPM * 70/73 Kg WITH THREE PROPELLERS FROM 125 cm @10900 RPM*
CARBURETOR WALBRO WG8
EGT: 660 °C
CHT: 170°C
MAX COOLANT TEMPERATURE:
CLUTCH DRY CENTRIFUGAL
* Test was made in optimal conditions at sea level after running – in WARNINGS!
The general recommendations included in the Technical Specifications sections are very important
to prevent severe damage to the engine and for the safety of users. ALWAYS FOLLOW THE
INSTRUCTIONS GIVEN ABOVE AND DO NOT EXCEED THE MAXIMUM VALUES SPECIFIED.
SKY ENGINES SHALL NOT BE LIABLE FOR INJURIES TO PEOPLE OR DAMAGES TO
PROPERTY ARISING FROM THE FAILURE TO FOLLOW THE AFOREMENTIONED
TECHNICAL SPECIFICATIONS.
3.3 ASSEMBLY OF SECONDARY COMPONENTS
3.3.1 SPECIAL ASSEMBLY INSTRUCTIONS Engine SKY110S is more complex than other models and a greater experience is therefore
required to assemble its components and specifically its internal ones. As the engine is liquid
cooled, the assembly of the components that use the radiator's coolant requires the
implementation of specific tasks that only a skilled mechanics is able to carry out.
Therefore, all users who are not specifically skilled or trained to perform these operations
SHOULD NOT TOUCH THE ENGINE EXCEPT FOR ORDINARY MAINTENANCE
OPERATIONS, WHICH SHOULD BE PERFORMED FOLLOWING THE DETAILED
INSTRUCTIONS SPECIFIED BELOW. DO NOT IMPROVISE OR ATTEMPT TO MAKE
UNAUTHORIZED CHANGES THAT COULD DAMAGE THE ENGINES NOT COVERED BY
WARRANTY.
• Unauthorized changes could make the engine highly unstable!
• Replace the components of the engine with original SKY ENGINES spare parts to guarantee a
reliable operation.
3.3.2 RADIATOR(see also 3.3.3 RODS SILENT-BLOCK)
Mount the special silent blocks on the radiator and then the brackets on the silent blocks
(on both sides).
Then mount the tank as shown.
Place the radiator on the cover and put the tubes in their respective outlets as shown below.
Check the fitting positions and insert the clamp straps as in the photos. 3.3.3 SILENT BLOCK STAFF.
Fit the teflon plate and then the silent blocks on the cover as shown in the figure.
Mount the brackets on the silent block of the cover and the silent blocks on the brackets.
Place the tank on the bracket and screw the nut without tightening it, just to see the tip of the screw that goes out as in the figures to the side.
Finally mount the radiator on the silent blocks.
3.3.4 CLUTCH Before mounting the clutch make sure you have the following pieces.
Place the spring in the seat of the pile and place the clutch body as shown in the figure. Do this also on the other side.
Place the whole in a vice by helping to fix it from a cylindrical body by matching the holes of the clamp and clutch body and pushing the pin as shown in the following figure.
Place the pins on both sides, also place the washers and nuts put a loctite handle to block the threads.
Tighten the nut without tightening the clutch body completely, leaving the relatively free mops in the picture.
3.3.5 POWER SWITCH Take the flywheel and make sure it is necessary, ie ratchets, screws and springs. Be sure to clean the items in question.
Place the spring in the hole and fly guide as in the photo on the side.
Place the ratchet and make sure it engages with the spring.
Place the locking tab and the provided screw, tighten and make sure the ratchet be free to rotate as in the following 2 photos.
Take the 3.05 mm thick brass washer (possibly working it) and place it in the center of the cup as shown.
Place the spring inside the cup and apply grease to the grease.
Place the rope in the hole in the windshield, make a small knot to avoid baiting as in the 2 pictures here to the side.
Once you have tightened the winder in the bowl, make 8 ropes of rope to pull the spring.
Finally, let the rope pass through the bowl hole and get the figure below and make sure it works.
3.3.3 MUFFLER Mount the 3 washers bend over the bands and sort them as in the figure.
Complete the muffler as shown in the figure
Apply copper grease to the inner rim of the muffler manifold, then place the muffler on the manifold at the glue, pushing the manifold on the manifold as in the following figures.
Tighten with 2 screws M6 x 12 and washers the muffler fittings with silent blocks of the engine chassis; place 2 straps between the silent blocks and the muffler as in the side photo.
Finally, insert the steel cable
between the hooks by sliding it into
the springs and tie it to the
manifold side as in
3.3.7 SILENCER
Unscrew the bolts that connect the manifold to the base of the silencer.
Unhook the tube base and remove the tube by holding the silencer out of the socket;
then remove the worn glass wool.
Hook the new glass wool, roll it up, recirculate the tube and screw down the manifold as
shown in the following pictures.
3.3.8 LAMELLAR PACK
Apply and distribute uniformly, avoiding sloping along the inner tube, an excessive amount of motorsil
on the inner flange.
Position the "paper" gasket and distribute another motorcycle layer equal to the previous one as in
the following figures.
the compartment in the
crankcase, making sure that
upwards, for example toward
can be seen from the 2 photos
at the top left ).
Place another r layer of motorsil on the outside of the glue box, another paper gasket, and
still motorsil, finally installing the carburetor and tightening as shown in the following
figures.
3.3.9 CARBURETOR
Unscrew the screws and replace the membranes as shown in the illustration.
4.0 MAINTENANCE
THIS CHAPTER CONTAINS VERY IMPORTANT INFORMATION. IN ORDER TO ENHANCE THE LIFE OF YOUR ENGINE AND PREVENTING PROBLEMS CAUSED BY WEAR, IT IS ESSENTIAL TO CAREFULLY READ ALL THE WARNINGS AND DATA ON SCHEDULES, AND FOLLOW ALL THE INSTRUCTIONS PROVIDED. IT IS USEFUL TO REMEMBER THAT DAMAGE ORIGINATING FROM AN INSUFFICIENT MAINTENANCE ARE NOT COVERED BY THE WARRANTY.
4.1 CLEANING
SKY100 engines do not require specific cleaning operations. However, when performing this
operation, always remember not to use corrosive solvents on the external or internal parts of the
engine.
ALWAYS KEEP THE INTERNAL PART OF THE ENGINE CLEAN TO PREVENT RESIDUALS
FROM ENTERING THE INTERIOR OF THE CYLINDER OR, WORST STILL, THE GUARD AND
CAUSING THE SEIZURE OF THE ENGINE.
When using a filter box, always remember to disassemble it and wash the internal filter with
water and a degreasing detergent after approximately 100 hours of flight.
Cleaning the muffler does not improve the performance of the engine, but only the quality and
quantity of exhaust emissions. Customers who prefer not to hear so much noise while flying
should carry out the maintenance operations described in the chapter above with a frequency of at
least 50 hours of flight for an optimum operation of the muffler.
4.2 TOPPING UP LIQUIDS
replacing are:
BY PERFORMING THE
1. Loosen the RADIATOR CAP.
2. Verify that the liquid inside the radiator reaches the side nut next to the cap.
3. If the liquid level is below the indicator, top up the radiator coolant as specified above.
4. When replacing the whole amount of coolant, always remember not to exceed the amount of
700 ml:
ATTENTION! COOLANT MUST ALWAYS BE TOPPED UP WHEN
THE ENGINE IS COLD!!!
REMEMBER TO POUR THE LIQUID INTO THE
RADIATOR AND NOT INTO THE SMALL CONTAINER,
AS THE LATTER IS DESIGNED TO BE USED TO
COLLECT THE COOLANT IN EXCESS, NOT TO FILL
THE RADIATOR. THE LIQUID IN EXCESS MAY EXIT
FROM THE SMALL TANK.
CHECK THE SMALL TANK AND VERIFY THAT THE
COOLANT DOES NOT EXCEED THE
RECOMMENDED LEVEL.
INDICATOR WITH THE BLACK "MAX" WORD
SITUATED ON THE EXTERNAL SIDE, AS SHOWN IN
THE PHOTO.
COULD CAUSE LEAKS.
REDUCTION GEAR OIL: 1. REGULARLY INSPECT THE OIL LEVEL IN THE REDUCTION GEAR
BY THE BUSHING ON THE FRONT SIDE (with engine in vertical position it
must be at the lower level of the hole).
2. REPLACE THE WHOLE AMOUNT OF OIL AFTER APPROXIMATELY
100 HOURS OR IF YOU NOTICE THAT THE BUSHING IS PLACED
IN PERFECT VERTICAL POSITION.
3. OPEN THE BUSHING, PERFECTLY DRAIN EXHAUST OIL AND INSERT 25 ml OF
SYNTHETIC OIL OF GEARS W 150.
Our technician recommend Kluber Lamora 150.
4.3 ADJUSTMENTS
The only adjustment that may enhance the operation of the
engine is the regulation of the maximum and minimum level
of the carburetor:
STANDARD ADJUSTMENT: OPEN INDICATED SCREW BY ONE AND A QUARTER OF REVOLUTION (3) 4.4 SCHEDULES AND GENERAL RECOMMENDATIONS This paragraph lists a few recommendations that have been defined as a result of the tests carried
out by our mechanics and on the basis of the feedback provided by customers. We kindly ask you
to report anomalies or maintenance procedures that are not described in this manual using the
space provided in chapter 7.0. You can also use this space for feedback or queries, to which we
will be glad to answer.
Some components of SKY110S are subject to wear. Therefore, to avoid damaging the engine or
affecting its operation, we recommend you perform the operations described below at the
specified intervals:
Before flying, always check the safety devices of the muffler, silencer and filter box (verify that the
steel cables are in place and correctly connected).
Replace the sparking plug after approximately 50 hours of flight.
Inspect the silent blocks that support the radiator every 50 hours and replace them after 100 hours
of flight or one year.
The same applies to the silent blocks of the crosspiece and muffler, which have to be replaced
after 100 hours of flight or after one year.
Inspect the blocks of the clutch after approximately 50 hours of EFFECTIVE flight. For
information on how to disassemble them, see the section on the disassembly of secondary
components in Chapter 3.0.
• the depurtures increase the wearing out of the blocks of the clutch:an exagerated number of
departures decrease the effective hours of flight.in this case we recommend (especially to the beginner,
who are making exercises of departures) to check constantly the wear of the different component of the
clutch.
Replace the membranes of the carburetor after 100 hours of flight or one year.
Inspect the laminar bundle under the radiator every 50 hours of flight.
Inspect the bank bearings approximately every 200 hours.
Regularly inspect the teeth of the flywheel.
CHECK THE LEVEL OF COOLANT INSIDE THE RADIATOR EVERY 50 HOURS OF FLIGHT
USING THE CAP SITUATED ON THE TOP OF THE RADIATOR, NOT THE ONE IN THE
DISCHARGE CONTAINER.
Our technicians recommend the use of Arexons Glitech 4100 Coolant
MAINTENANCE SCHEDULE
Global check tightening bolts and screws
Every 25 hours Muffler’s silent blocks
conditions. Fixing wrappers
Every 50 hours
Clutch pads wear
Reduction oil level
Wool glass into silencer (optional)
Every 100 hours or every year (even if engine isn’t used)
All Silent blocks
and head of piston
Every 200 hours Crankshaft’s ball bearings wear Crankshaft seals
5.0 SPARE PARTS The manufacturer always recommends the use of original SKY ENGINES parts only.
The catalog of spare parts is available on Web site: www.skyengines.com
Spare parts can be ordered by contacting us directly by phone or e-mail, or through
local distributors.
For information on how to replace components covered by warranty, see the following
chapter.
6.0 WARRANTY
6.1 REQUIREMENTS
The warranty is valid for 12 months from the date of sale or from the date in which the product has been sold by the distributor. Specific requirements are listed below: 2) THE WARRANTY APPLIES TO: - All spare parts and labor, except transportation charges that shall have to be paid by the customer, provided that the product has been used and serviced according to instructions. To order spare parts: - Send the order by e-mail or fax, remembering to quote the serial number printed on the side of the engine guard. Always attach a photo of the faulty spare part, clearly highlighting the damage and describing in detail the problem. If the product has not been purchased directly from us, please contact your distributor first. 3) THE WARRANTY SHALL NOT APPLY TO: - Failures/faults caused by an improper use or negligence. - Engine modifications not specifically authorized and approved by Sky Engines S.r.l. - Ordinary wear of components, parts and spare parts - Damages caused by the failure to perform to perform a regular maintenance - Damages caused by the use of the engine without a propeller - Damages caused by corrosion. - Damages (seizure) caused by the use of gasoline without added lubricant - Damages caused by the use of parts not specifically designed by Sky Engines - Damages caused by the use of the engine at speeds above those recommended by Sky Engines S.r.l. - Damages caused by the loss of components during a flight, originating from the improper tightening of assembly/disassembly parts, which is responsibility of the owner - Accidents, injuries, abuse or negligence caused by the owner or by any other person using the engine in his name. - Damages caused by the suction of foreign material. - Damages caused by maintenance carried out by incompetent mechanics or unskilled personnel 4) SPECIFIC INFORMATION: This is not a certified engine! Alterations carried out by the user or the removal of original spare parts may jeopardize the safety of the engine. The user agrees to accept full liability and acknowledges that the engine may switch off during use.. FOR ADDITIONAL INFORMATION ON THE USE OF THIS ENGINE, PLEASE CONTACT SKY ENGINES SRL DIRECTLY.
6.1 WARRANTY CERTIFICATE ENGINE CODE: ………………………………………………………………………. MODEL AND COLOR: ……………………………………………………………….. DISTRIBUTOR NAME: ……………………………………………………………….. DATE OF PURCHASE: ………………………………………………………………. SITE OF PURCHASE: ………………………………………………………………… THIS CERTIFICATE GUARANTEES THE ENGINE FOR ONE YEAR, STARTING FROM THE DATE OF PURCHASE. FOR DETAILED INFORMATION ON THE TERMS, CAREFULLY READ THE MANUAL. FOR FURTHER INFORMATION, PLEASE CONTACT US DIRECTLY BY PHONE OR E- MAIL OR VISIT www.skyengines.com ALWAYS REMEMBER TO RETURN THE COMPLETED AND SIGNED WARRANTY CERTIFICATE TO ACTIVATE THE WARRANTY.
DATE / /
This filled in document certify that
customer accept all warranty and
safety terms indicated in this manual
SIGNATURE OF DISTRIBUTOR
6.2 WARRANTY CERTIFICATE
customer accept all warranty and
safety terms indicated in this manual
C.da San Rustico, snc 63038 Ripatransone(AP) www.skyengines.com Tel./Fax. 0735907494
6.2 WARRANTY CERTIFICATE ENGINE CODE: ……………………………………………………………………….. MODEL AND COLOR: ……………………………………………………………….. DISTRIBUTOR NAME: ……………………………………………………………….. DATE OF PURCHASE: ……………………………………………………………… SITE OF PURCHASE: ……………………………………………………………….. THIS CERTIFICATE GUARANTEES THE ENGINE FOR ONE YEAR, STARTING FROM THE DATE OF PURCHASE. FOR DETAILED INFORMATION ON THE TERMS, CAREFULLY READ THE MANUAL. FOR FURTHER INFORMATION, PLEASE CONTACT US DIRECTLY BY PHONE OR E-MAIL OR VISIT www.skyengines.com ALWAYS REMEMBER TO RETURN THE COMPLETED AND SIGNED WARRANTY CERTIFICATE TO ACTIVATE THE WARRANTY.
DATE / /
customer accept all warranty and
safety terms indicated in this manual